It should be telling that generally most advertising is paid per impression, not per click (even when the advertiser pays per click, their cost per click is gen

It should be telling that generally most advertising is paid per impression, not per click (even when the advertiser pays per click, their cost per click is generally calculated from CTR and thus really a cost per impression) You might not click on the ads, but (if you're not blocking them) you're probably seeing them, and remembering some of them, and they influence you.